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Full text of "MACHINE FOR CRIMPING LEATHER FOR BOOTS, &C. - United States Patent 656"

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Specification of Letters Patent No. 656, dated March 26, 1838; Antedated September 26, 1837. 

To all whom it may concern : 

Be it known that I, Joseph Adams, of 
Fairhaven, in the. county of Rutland and 
State of Vermont, have invented a new and 
5 useful Machine for Crimping Boot-Fronts; 
and I do hereby declare the following is a 
full and exact description. 

The nature of my invention consists in 
the construction and combination of jaws 

10 and carriage for a boot crimp to rest on 
with a double vise castiron wheel and pin- 
ions and cranks, and rack so attached as 
to work the whole of the machine so as to 
produce the intended effect of crimping 

15 boot fronts. 

To enable others to make and use my in- 
vention I will proceed to describe its con- 
struction and operation. 

I construct the frame of my machine in 

20 the following manner: Two posts four feet 
seven inches long and two inches and a 
half square (as shown by letter B in the 
drawing) and worked into two sills, eight- 
een inches long of the same dimensions of 

25 the posts (shown by letter K) and connected 
by a girth twenty one inches long of the 
same dimension, about three inches from the 
top of the posts and (shown by letter A) 
and by another girth of the same dimen- 

30 sions (also shown by letter A) about eight- 
een inches from the bottom of said posts, 
two wooden jaws ten inches wide and twelve 
long (as shown by letter C) and framed 
into the upper girth near the center and 

35 pointed at the lower end to fit the crimp, 
the point of said jaws to hang directly over 
the angle or curve of the crimp hereafter 
mentioned. These jaws are supported by 
two braces of convenient size. To prevent 

40 them from splitting an iron bolt about three 
quarters of an inch is passed through the 
jaws and braces about seven inches from the 
points of said jaws with a square flat head 
on the back side and sunk in to the brace to 

45 keep it from turning and a screw on the 
other end, with a crank about six inches 
long, and nut on the end, to shut the jaws, 
which are set in the girth so as to make 
them slightly movable, so as they may open 

60 and shut, a straight spring of sufficient 
strength is inserted between the jaws so as 
not to infringe with the bolt and action of 
the machine, for the purpose of opening 
them, with cresases in the inside of the jaws, 

65 to force the leather on to the crimp, a car- 
riage constructed of bed work (as shown 

by the letters M and N) and framed into 
a bed piece of the same size of the posts 
(as shown by letter G) and runs in grooves 
in the posts between the two girths, a crimp go 
after the form ordinarily used by cordwain- 
ners (shown by letter D) about half an 
inch thick is placed on the bedwork, which 
is made of plank of the same thickness of 
the bed piece and fitted to the crimp with 45 
gones is, the bed work at each end of the 
crimp and center, to receive the said crimp 
and keep it in its place. Two pairs of re- 
versed jaws indented into the heel work at 
right angles from the crimp (as shown by the 70 
letters E) of similar shape of the others 
with hooking crimps on the instep to ex- 
tend the leather and shut in the same man- 
ner of the upper jaws, as shown by the let- 
ters F on the head of the bolts, and small 75 
spiral springs inserted between the jaws 
just below the bolt to throw them open, 
with a small girth of wood at the bottom 
of the jaws working at each end like a hinge 
to keep the lower end of the jaws from 80 
spreading so as to extend the top or mouth 
of the jaws to receive the crimp and leather, 
with a piece cut out of the bedwork for the 
girth and bolt to work in, a cast iron rack 
is attached to the bed piece (as shown by 86 
letter Q) about an inch and a quarter wide 
of sufficient thickness, with half inch cogs, 
and passes down through the lower girth. 
This rack is moved by a pinion wheel (as 
shown by letter P) of 3 inches and a half so 
spangler sunk into the lower girth so as to 
connect with the rails, a shaft passes 
through the pinion and a wheel of about 
fifteen inches diameter (as shown by O) 
and one end of the shaft resting on the girth 05 
and the other on a standard (as shown by 
letter I) and mortised into a cross piece rest- 
ing on the sills as shown by letter J and 
turned by a crank twelve or fourteen inches 
long attached to the shaft that passes 100 
through a pinion two inches and a half di- 
ameter shown by letter T connected with 
the wheel (O) and resting on a standard 
(as shown by letter H) attached to the left 
post by a bolt and framed into the piece rest- 106 
ing on the sills a double cast iron vise (as 
shown by letter Ii) of four inches and a half 
head and nine inches shank inserted in the 
bedwork to the right of the center of the 
rack, the shank pases down through the bed no 
piece and lower girth containing two sets 
of teeth indented at the top, with an open- 



ing in the center three inches long to re- 
ceive the crimp the jaws of the vise work- 
ing at the bottom of the head on a hinge, 
an iron rod about three eighths of an inch 
fi square passes through the- vise horizontally 
two and a half inches from the top and 
movable. Secured with a nut and screw on 
one side and secured with a small crank 
and nut on the other end to shut the vise 

:i0 with two common straight springs inserted 
between the jaws of the vise to throw them 
open. An iron slide six inches long, half 
an- inch wide, and a quarter thick passes 
through a bolt and staple that fastens it to 

15 the lower girth (as shown by letter L) and 
slides into a notch in the right of the shank 
of the vise about one inch from the bottom 
of the shank to hold it fast. Two pairs 
. of clamps (shown by U) attached to the 

20 upper sections of the bedwork and shut in 
the same manner as the jaws to fasten the 
top and toe of the boot front to prevent its 
sinking at the instep and ankle in thin tight 
leather a small slide and spring attached to 

25 the lower side of the bed piece, (or spring) 
to snap into the notches on the right side 
of the vise to hold it when the corners of 
the boot is brought to their proper place. 
AH of the machine must be made of some 

30 good durable hard wood, except the cast- 
ings, and all of the jaws may be faced with 
sheet brass or copper to make them more 
durable but is not necessary except for dura- 

35 To make an operation with the above de- 
scribed machine, the leather must be thor- 
oughly wet and doubled in the center and 
placed in the crimp. Then close the upper 
jaws with the crank attached for that pur- 

40 pose to a suitable distance to receive the 
leather and crimp. Then move the carriage 
up with the crank attached to the pinion 
T so as to force the leather and crimp be- 

tween the upper jaws. Then open the jaws 
and let the carriage fall down and fasten 45 
the vise with the slide, attached for that 
purpose. Then lower the carriage so as to 
project the rim above, the bedwork on each 
side of the crimp. Then place the corners 
of the boot front into the vise and fasten 50 
them with the crank that shuts the vise. 
Then raise the carriage until the corners 
of the boot are brought to their proper 
plane. Then let the vise loose from the slide 
and force up the crimp as before to smooth 55 
down the wrinkles that may rise. Then 
raise the reversed jaws so as to bring them 
full on to the leather and crimp. Then 
close them with cranks on the end of the 
bolts marked /, and close the upper jaws 60 
as before, and force the leather and crimp 
up in between the upper jaws, which will 
force the reverse jaws back to their place 
and the leather is ready to tack, on to the 
crimp and take out of the machine. In case 65 
of hard stubborn leather the corners of the 
boot front had better be brought down by ; 
degrees, by drawing the corners of the boot 
front one or two notches at a time. Theii 
let the vise loose and drive the leather and 70 
crimp up into the upper jaws to prevent 
wrinlcles rising in the curve of the crimp, 
so continue the operation until the corners 
are brought to their proper plane. Then 
proceed_ with the reversed jaws as above. 75 

I claim as my invention, and desire to 
secure by Letters Patent — 

The reversed jaws E, E, constituted and 
operating substantially as* herein described: 
and I claim them also, in their combina- 80 
tion with the jaws C, C, as herein described. 



Alonson Allen, 
James M. Chase.